01-01-2020, 08:12 PM
Biggest thing you need to account for with Low-Mass carriers is unlocking time.
They are meant for race guns in competition where minimal reciprocating mass effects are desired (less weight banging around in the gun, throwing your sight picture off-TGT).
If you have early unlocking with residual stress on the lugs, and now compound that with torsion on the lugs, it can lead to early lug failure, no matter the cartridge.
The longer you can keep the bolt locked, the better.
Adding recoil spring weight can help with this, along with adjustable gas.
Most Low-Mass carriers are advertised or were designed with use in conjunction with adjustable gas, and JP is the first one to do this as far as I know.
They are meant for race guns in competition where minimal reciprocating mass effects are desired (less weight banging around in the gun, throwing your sight picture off-TGT).
If you have early unlocking with residual stress on the lugs, and now compound that with torsion on the lugs, it can lead to early lug failure, no matter the cartridge.
The longer you can keep the bolt locked, the better.
Adding recoil spring weight can help with this, along with adjustable gas.
Most Low-Mass carriers are advertised or were designed with use in conjunction with adjustable gas, and JP is the first one to do this as far as I know.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com